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          vue 刷新当前页面
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<p><a target="_blank" rel="noopener" href="https://blog.csdn.net/qq_16772725/article/details/80467492">https://blog.csdn.net/qq_16772725/article/details/80467492</a><br><a target="_blank" rel="noopener" href="https://segmentfault.com/a/1190000017007631">https://segmentfault.com/a/1190000017007631</a></p>
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<h2 id="简答粗暴"><a href="#简答粗暴" class="headerlink" title="简答粗暴"></a>简答粗暴</h2><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 这两条都能实现，强制刷新页面</span></span><br><span class="line"></span><br><span class="line">location.reload()</span><br><span class="line"><span class="built_in">this</span>.$router.go(<span class="number">0</span>)</span><br></pre></td></tr></table></figure>


<h2 id="移动到一个空白页"><a href="#移动到一个空白页" class="headerlink" title="移动到一个空白页"></a>移动到一个空白页</h2><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">//移动到一个空白页 再移动回来</span><br><span class="line"></span><br><span class="line">this.$router.replace(&#123;path: &quot;/back&quot;,  query: &#123;url: &#x27;/thisUrl&#x27; &#125;&#125;)</span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">template</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">template</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">script</span>&gt;</span></span><br><span class="line"><span class="javascript">   <span class="keyword">export</span> <span class="keyword">default</span> &#123;</span></span><br><span class="line"><span class="javascript">      <span class="function"><span class="title">data</span>(<span class="params"></span>)</span> &#123;</span></span><br><span class="line">      &#125;,</span><br><span class="line"><span class="javascript">      <span class="function"><span class="title">mounted</span>(<span class="params"></span>)</span>&#123;</span></span><br><span class="line"><span class="javascript">        <span class="keyword">var</span> url = <span class="built_in">this</span>.$route.query(<span class="string">&quot;url&quot;</span>)</span></span><br><span class="line"><span class="javascript">		<span class="built_in">this</span>.$router.replace(url)</span></span><br><span class="line">      &#125;,</span><br><span class="line">  &#125;</span><br><span class="line"><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br></pre></td></tr></table></figure>


<h2 id="provide-inject-组合"><a href="#provide-inject-组合" class="headerlink" title="provide / inject 组合"></a>provide / inject 组合</h2><p>原理：允许一个祖先组件向其所有子孙后代注入一个依赖，不论组件层次有多深，并在起上下游关系成立的时间里始终生效</p>
<p>在<code>App.vue</code>,声明<code>reload</code>方法，控制<code>router-view</code>的显示或隐藏，从而控制页面的再次加载。</p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">template</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">div</span> <span class="attr">id</span>=<span class="string">&quot;app&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">router-view</span> <span class="attr">v-if</span>=<span class="string">&quot;isRouterAlive&quot;</span>&gt;</span><span class="tag">&lt;/<span class="name">router-view</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;/<span class="name">div</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">template</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">script</span>&gt;</span></span><br><span class="line"><span class="javascript"><span class="keyword">export</span> <span class="keyword">default</span> &#123;</span></span><br><span class="line"><span class="javascript">  name: <span class="string">&#x27;App&#x27;</span>,</span></span><br><span class="line">  provide () &#123;</span><br><span class="line"><span class="javascript">    <span class="keyword">return</span> &#123;</span></span><br><span class="line"><span class="javascript">      reload: <span class="built_in">this</span>.reload</span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  data () &#123;</span><br><span class="line"><span class="javascript">    <span class="keyword">return</span> &#123;</span></span><br><span class="line"><span class="javascript">      isRouterAlive: <span class="literal">true</span></span></span><br><span class="line">    &#125;</span><br><span class="line">  &#125;,</span><br><span class="line">  methods: &#123;</span><br><span class="line">    reload () &#123;</span><br><span class="line"><span class="javascript">      <span class="built_in">this</span>.isRouterAlive = <span class="literal">false</span></span></span><br><span class="line"><span class="javascript">      <span class="built_in">this</span>.$nextTick(<span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>&#123;</span></span><br><span class="line"><span class="javascript">        <span class="built_in">this</span>.isRouterAlive = <span class="literal">true</span></span></span><br><span class="line">      &#125;)</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line"><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br></pre></td></tr></table></figure>
<p>在需要用到刷新的页面。在页面注入<code>App.vue</code>组件提供（<code>provide</code>）的 <code>reload</code> 依赖，在逻辑完成之后（删除或添加…）,直接<code>this.reload()</code>调用，即可刷新当前页面。</p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">template</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">template</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;<span class="name">script</span>&gt;</span></span><br><span class="line"><span class="javascript">   <span class="keyword">export</span> <span class="keyword">default</span> &#123;</span></span><br><span class="line"><span class="javascript">      <span class="function"><span class="title">data</span>(<span class="params"></span>)</span> &#123;</span></span><br><span class="line">      &#125;,</span><br><span class="line"><span class="javascript">      inject: [<span class="string">&quot;reload&quot;</span>],</span></span><br><span class="line"><span class="javascript">      <span class="function"><span class="title">mounted</span>(<span class="params"></span>)</span>&#123;</span></span><br><span class="line"></span><br><span class="line">      &#125;,</span><br><span class="line"><span class="javascript">       <span class="function"><span class="title">muthods</span>(<span class="params"></span>)</span>&#123;</span></span><br><span class="line"><span class="javascript">           <span class="function"><span class="title">reload</span>(<span class="params"></span>)</span>&#123;</span></span><br><span class="line"><span class="javascript">               <span class="built_in">this</span>.reload()</span></span><br><span class="line">           &#125;</span><br><span class="line">       &#125;</span><br><span class="line">  &#125;</span><br><span class="line"><span class="tag">&lt;/<span class="name">script</span>&gt;</span></span><br></pre></td></tr></table></figure>


<h2 id="路由参数变化而页面不刷新"><a href="#路由参数变化而页面不刷新" class="headerlink" title="路由参数变化而页面不刷新"></a>路由参数变化而页面不刷新</h2><p>假如我们当前的路由为 <code> /goods?id=1</code>，跳转后的路由为 <code>/goods?id=2</code>，这时因为vue 的<code>组件复用</code>机制， vue 是不会刷新页面的，我们可以监听路由变化，主动重新获取数据</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">watch: &#123;</span><br><span class="line">    $route (to, <span class="keyword">from</span>) &#123;</span><br><span class="line">		<span class="built_in">this</span>.goodsId = <span class="built_in">this</span>.$router.query.id </span><br><span class="line">        <span class="built_in">this</span>.init()</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">// 当然，强制刷新也是可以实现的 </span></span><br></pre></td></tr></table></figure>



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